U.S. patent application number 15/664117 was filed with the patent office on 2018-02-22 for agent for improved oxidative lightening of keratinic fibres.
This patent application is currently assigned to Henkel AG & Co. KGaA. The applicant listed for this patent is Henkel AG & Co. KGaA. Invention is credited to Udo Erkens, Burkhard Mueller.
Application Number | 20180049958 15/664117 |
Document ID | / |
Family ID | 59778751 |
Filed Date | 2018-02-22 |
United States Patent
Application |
20180049958 |
Kind Code |
A1 |
Erkens; Udo ; et
al. |
February 22, 2018 |
AGENT FOR IMPROVED OXIDATIVE LIGHTENING OF KERATINIC FIBRES
Abstract
Agents and methods for lightening keratinic fibres are provided
herein. In an embodiment, agents for lightening keratinic fibres
include at least two separately packaged preparations (A) and (B)
as well as an optional further preparation (C) which is packaged
separately from preparations (A) and (B). Preparations (A), (B),
and, when present, preparation (C) are mixed immediately prior to
use in order to form a mixture for application. Preparation (A)
includes at least one persulphate and at least two chelating
agents. Preparation (B) is free-flowing and includes at least one
oxidizing agent.
Inventors: |
Erkens; Udo; (Willich,
DE) ; Mueller; Burkhard; (Duesseldorf, DE) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Henkel AG & Co. KGaA |
Duesseldorf |
|
DE |
|
|
Assignee: |
Henkel AG & Co. KGaA
Duesseldorf
DE
|
Family ID: |
59778751 |
Appl. No.: |
15/664117 |
Filed: |
July 31, 2017 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61K 8/44 20130101; A61K
8/23 20130101; A61K 8/55 20130101; A61K 8/447 20130101; A61K 8/41
20130101; A61K 8/22 20130101; A61K 2800/882 20130101; A61Q 5/08
20130101 |
International
Class: |
A61K 8/22 20060101
A61K008/22; A61K 8/23 20060101 A61K008/23; A61K 8/55 20060101
A61K008/55; A61K 8/41 20060101 A61K008/41; A61Q 5/08 20060101
A61Q005/08 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 16, 2016 |
DE |
10 2016 215 198.3 |
Claims
1. Agents for lightening keratinic fibres, comprising at least two
separately packaged preparations (A) and (B) as well as an optional
further preparation (C) which is packaged separately from
preparations (A) and (B), wherein preparations (A), (B), and, when
present preparation (C) are mixed immediately prior to use in order
to form a mixture for application, wherein i. preparation (A)
comprises at least one persulphate and at least two chelating
agents, and ii. preparation (B) is free-flowing and comprises at
least one oxidizing agent.
2. The agent according to claim 1, wherein that at least two
chelating agents of preparation (A) are selected from the group of:
(a) nitrilotriacetic acid (NTA), (b) diethylenetriamine pentaacetic
acid (DTPA), (c) ethylenediamine disuccinic acid (EDDS), (d)
ethylenediamine diglutaric acid (EDGA), (e)
2-hydroxypropylenediamine disuccinic acid (HPDS), (f)
glycinamide-N,N'-disuccinic acid (GADS), (g)
ethylenediamine-N-N'-diglutaric acid (EDDG), (h)
2-hydroxypropylenediamine-N-N'-disuccinic acid (HPDDS), (i)
ethylenediamine tetraacetic acid (EDTA), (j) ethylenedicysteic acid
(EDC), (k) diaminoalkyl di(sulphosuccinic acid) (DDS), (l)
ethylenediamine-N-N'-bis(ortho-hydroxyphenyl acetic acid (EDDHA),
(m) N-2-hydroxyethyl-N,N-diacetic acid, (n) glycerylimino diacetic
acid, (o) iminodiacetic acid-N-2-hydroxypropylsulphonic acid, (p)
aspartic acid-N-carboxymethyl-N-2,5-hydroxypropyl-3-sulphonic acid,
(q) .alpha.-alanine-N,N'-diacetic acid, (r) aspartic
acid-N,N'-diacetic acid, (s) aspartic acid-N-monoacetic acid, (t)
dipicolinic acid, (u) 1-hydroxyethane-(1,1-diphosphonic acid)
(HEDP), or (v) salts and derivatives thereof.
3. The agent according to claim 2, wherein as at least one of the
chelating agents preparation (A) comprises a salt.
4. The agent according to claim 2, wherein as one of the chelating
agents preparation (A) comprises 1-hydroxyethane-(1,1-diphosphonic
acid) (HEDP).
5. The agent according to claim 2, wherein as at least two of the
chelating agents preparation (A) comprises a salt of ethylene
diamine tetraacetic acid (EDTA) and
1-hydroxyethane-(1,1-diphosphonic acid) (HEDP).
6. The agent according to claim 1, wherein preparation (A)--with
respect to its weight--comprises the at least two chelating agents
in a total quantity of from about 0.02% to about 12% by weight.
7. The agent according to claim 1, wherein preparation (A)
comprises at least one persulphate selected from the group of
ammonium peroxodisulphate potassium peroxodisulphate, and/or sodium
peroxodisulphate.
8. The agent according to claim 1, wherein preparation (B), with
respect to its weight, comprises as the at least one oxidizing
agent hydrogen peroxide in quantities of from about 0.5% to about
30% by weight.
9. A method for lightening keratinic fibres, wherein at least two
separately packaged preparations (A) and (B) are mixed together to
form a mixture for application, the mixture is applied to the
fibres, and after a treatment time the mixture rinsed out again,
wherein preparation (A) comprises at least one persulphate and at
least two chelating agents, and preparation (B) comprises at least
one oxidizing agent fibres.
10. (canceled)
11. The agent according to claim 2, wherein as at least one of
chelating agents preparation (A) comprises a salt of ethylene
diamine tetraacetic acid (EDTA).
12. The agent according to claim 2, wherein as at least one of
chelating agents preparation (A) comprises a sodium salt of
ethylene diamine tetraacetic acid (EDTA).
13. The agent according to claim 1, wherein preparation (A)--with
respect to its weight--comprises the at least two chelating agents
in a total quantity of from about 0.2% to about 3% by weight.
14. The agent according to claim 1, wherein preparation (B), with
respect to its weight, comprises as at least one oxidizing agent
hydrogen peroxide in quantities of from about 6% to about 12% by
weight.
15. The agent according to claim 1, wherein preparation (C) is
present and wherein preparation (C) comprises at least one
alkalizing agent.
16. The agent according to claim 15, wherein preparation (C)
further comprises a silicon-containing compound.
17. The method according to claim 9, wherein a preparation (C) is
further mixed together with preparations (A) and (B) to form the
mixture, and wherein preparation (C) comprises at least one
alkalizing agent.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to German Patent
Application No. DEI02016215198.3, filed Aug. 16, 2016 which is
incorporated herein by reference in its entirety.
TECHNICAL FIELD
[0002] The present disclosure pertains to agents for the oxidative
modification of color in the field of cosmetics, which are
particularly suitable for lightening keratinic fibres, in
particular human hair.
BACKGROUND
[0003] Modifying the shape and color of the hair constitutes an
important field of modern cosmetics. In addition to dyeing,
lightening of the actual hair fibres or bleaching them blond is a
particular wish for many consumers, because a blond hair color is
considered to be attractive and desirable from a fashion viewpoint.
Various bleaching agents with a variety of bleaching powers are
available on the market.
[0004] The oxidizing agents contained in bleaching agents are
capable of lightening hair fibres by oxidatively destroying the
hair's own pigment, namely melanin. Using hydrogen peroxide as the
only oxidizing agent is appropriate for a moderate bleaching
effect--possibly with the addition of ammonia or other alkalizing
agents--but in order to obtain a stronger bleaching effect, a
mixture of hydrogen peroxide and peroxodisulphate salts and/or
peroxomonosulphate salts is used.
[0005] For reasons of stability, commercial bleaching agents are
usually offered for sale in two separately packaged preparations
which are mixed together immediately prior to use to form a
ready-to-use preparation. Usually, commercial bleaching agents
includes a liquid oxidizing agent preparation and a powder which
contains solid oxidizing agents.
[0006] For bleaching, the powder with the solid oxidizing agents is
mixed with the hydrogen peroxide solution immediately prior to use.
This mixture is then applied to the hair and is then rinsed out
after a specific treatment time. In order to obtain a sufficient
bleaching effect, agents of this type are usually highly alkaline,
with a pH of between about 9 and about 10.5. Values this high for
the pH are necessary in order to ensure that the outer cuticle
layer opens up, thus allowing the active species (hydrogen peroxide
and persulphate) to penetrate into the hair.
[0007] When the hair starts off being dark, longer application
times and/or repeated bleaching procedures are usually required in
order to lighten the hair. However, this is associated with more
severe damage to the hair, because not only the pigments of the
hair, but also the other structural components of the hair are
oxidatively damaged. The severity of the damage can range from
rough, brittle and hard-to-comb hair to compromised resistance and
tensile strength of the hair, and even to breakage of the hair.
[0008] The use of chelating agents during the oxidationive color
modification of keratinic fibres is known. The chelating agents are
aimed, inter alia, at preventing the decomposition of the hydrogen
by metal ions concentrated in the hair fibres.
[0009] Thus, EP 1 714 634 A1 describes a hair treatment kit for
coloring human hair, comprising a first compartment which contains
a chelating agent, and a second component which contains coloring
agents. By using a chelating agent, unwanted reactions on and with
hair, leading to unwanted heating, can be avoided.
[0010] Thus, the aim of the present disclosure is to mitigate the
disadvantages which have been mentioned of known oxidative
bleaching agents. In particular, there is a need to provide
elements containing oxidizing agents for lightening keratinic
fibres with an enhanced lightening power.
BRIEF SUMMARY
[0011] Agents and methods for lightening keratinic fibres are
provided herein. In an embodiment, agents for lightening keratinic
fibres include at least two separately packaged preparations (A)
and (B) as well as an optional further preparation (C) which is
packaged separately from preparations (A) and (B). Preparations
(A), (B), and, when present, preparation (C) are mixed immediately
prior to use in order to form a mixture for application.
Preparation (A) includes at least one persulphate and at least two
chelating agents. Preparation (B) is free-flowing and includes at
least one oxidizing agent.
[0012] In another embodiment, a method for lightening keratinic
fibres is provided. In accordance with the method, at least two
separately packaged preparations (A) and (B) are mixed together to
form a mixture for application. The mixture is applied to the
fibres. After a treatment time the mixture is rinsed out again.
Preparation (A) includes at least one persulphate and at least two
chelating agents, and preparation (B) comprises at least one
oxidizing agent.
DETAILED DESCRIPTION
[0013] The following detailed description is merely exemplary in
nature and is not intended to limit the disclosure or the
application and uses of the subject matter as described herein.
Furthermore, there is no intention to be bound by any theory
presented in the preceding background or the following detailed
description.
[0014] This aim is achieved by employing agents for lightening
keratinic fibres, containing at least two separately packaged
preparations (A) and (B) as well as an optional further preparation
(C) which is packaged separately from (A) and (B), which are mixed
immediately prior to use in order to form a mixture for
application, wherein [0015] i. preparation (A) contains at least
one persulphate, and [0016] ii. preparation (B) is free-flowing and
contains at least one oxidizing agent, and the preparation (A)
furthermore contains at least two chelating agents.
[0017] The term "keratinic fibres" or even "keratin fibres" should
be understood to mean fur, wool, feathers and in particular human
hair. Although the agents are primarily suitable for lightening
keratinic fibres, in principle, usage in other fields as well is
not excluded.
[0018] The preparations (A) are preferably in powder form. In this
regard, powders formed from solid components with different grain
sizes may be employed. Normally, it is preferable for the powder,
however, to have as homogeneous a grain size as possible, in
particular in order to make it easier to obtain a uniform
dispersion or solution of the powder in the preparations (B).
[0019] The preparations (A) may contain the substances in a solid
cosmetic support. A solid cosmetic support may contain silica
salts, in particular silicate and metasilicate salts with ammonium,
alkali metals or alkaline-earth metals. In particular,
metasilicates, with formula (SiO.sub.2)n(M.sub.2O).sub.m, wherein M
represents an ammonium ion, an alkali metal or a
half-stoichiometric equivalent of an alkaline-earth metal, are
exemplified by the ratio between n and m of .ltoreq. about 1 and
can be construed as being chain-like polymeric structures of the
anion [SiO.sub.3].sup.2-, may preferably be employed. Sodium
metasilicate with formula [Na.sub.2SiO.sub.3].sub..infin. is
particularly preferred in this regard. Equally preferred as those
silicates which are formed by a silicate with formula
(SiO.sub.2).sub.n(Na.sub.2O).sub.m(K.sub.2O).sub.p, wherein n
represents a positive rational number and m and p, independently of
each other, represent a positive rational number or 0, with the
proviso that at least one of the parameters m or p is other than 0
and that the ratio between n and the sum of m and p is between
about 2:1 and about 4:1.
[0020] Furthermore, the solid cosmetic supports may contain what
are known as anticaking agents, which are intended to prevent
clumping or caking of the powdered components. Preferred anticaking
agents of this type are water-insoluble, hydrophobic or
moisture-adsorbing powders of diatomaceous earth, pyrogenic
silicas, calcium phosphate, calcium silicates, aluminium oxide,
magnesium oxide, magnesium carbonate, zinc oxide, stearates, fatty
amines and the like.
[0021] Finally, the solid cosmetic supports may additionally
contain a dust control agent which prevents the powdered components
from forming dust. In this regard, in particular, inert oils may be
used. Preferably, the solid cosmetic supports contain ester oils or
mineral oils, preferably hydrocarbon oils such as liquid paraffin
oil, as the dust control agent.
[0022] The preparation (A) contains at least one persulphate salt
as the first essential ingredient. Suitable persulphate salts are
inorganic peroxy compounds. These are preferably selected from
ammonium peroxodisulphate, alkali metal peroxodisulphates, ammonium
peroxomonosulphate, alkali metal peroxomonosulphates, alkali metal
peroxodiphosphates and/or alkaline-earth metal peroxides. Ammonium
peroxodisulphate and/or alkali metal peroxodisulphates are
particularly preferred.
[0023] In a preferred embodiment of the present disclosure,
preparation (A) contains at least one peroxy disulphate salt as the
persulphate salt, in particular selected from ammonium
peroxodisulphate and/or potassium peroxodisulphate and/or sodium
peroxodisulphate.
[0024] Furthermore, it has been shown to be particularly preferable
for the preparations (A) to contain at least two different
peroxodisulphates. Preferred peroxodisulphate salts in this regard
are combinations of ammonium peroxodisulphate with potassium
peroxodisulphate and/or sodium peroxodisulphate.
[0025] The preparations (A) contain persulphate salts, preferably
in a quantity of from about 0.1 % to about 80 % by weight,
preferably from about 2 % to about 60 % by weight, particularly
preferably from about 3 % to about 50 % by weight and more
particularly preferably from about 5 % to about 45 % by weight,
respectively with respect to the total weight of preparation
(A).
[0026] Preparation (A) contains at least two chelating agents as
the further imperative ingredient. The at least two chelating
agents are preferably selected from the group of [0027] (a)
nitrilotriacetic acid (NTA), [0028] (b) diethylenetriamine
pentaacetic acid (DTPA), [0029] (c) ethylenediamine disuccinic acid
(EDDS), [0030] (d) ethylenediamine diglutaric acid (EDGA), [0031]
(e) 2-hydroxypropylenediamine disuccinic acid (HPDS), [0032] (f)
glycinamide-N,N'-disuccinic acid (GADS), [0033] (g)
ethylenediamine-N-N'-diglutaric acid (EDDG), [0034] (h)
2-hydroxypropylenediamine-N-N'-disuccinic acid (HPDDS), [0035] (i)
ethylenediamine tetraacetic acid (EDTA), [0036] (j)
ethylenedicysteic acid (EDC), [0037] (k) diaminoalkyl
di(sulphosuccinic acid) (DDS), [0038] (l)
ethylenediamine-N-N'-bis(ortho-hydroxyphenyl acetic acid (EDDHA),
[0039] (m) N-2-hydroxyethyl-N,N-diacetic acid, [0040] (n)
glycerylimino diacetic acid, [0041] (o) iminodiacetic
acid-N-2-hydroxypropylsulphonic acid, [0042] (p) aspartic
acid-N-carboxymethyl-N-2,5-hydroxypropyl-3-sulphonic acid, [0043]
(q) .alpha.-alanine-N,N'-diacetic acid, [0044] (r) aspartic
acid-N,N'-diacetic acid, [0045] (s) aspartic acid-N-monoacetic
acid, [0046] (t) dipicolinic acid, [0047] (u)
1-hydroxyethane-(1,1-diphosphonic acid) (HEDP) as well as [0048]
(v) salts and derivatives thereof.
[0049] Regarding the lightening power, the use of a salt,
preferably a sodium salt, ethylenediamine tetraacetic acid (EDTA),
has proved to be particularly advantageous having regard to
preparation (A). Examples of suitable EDTA salts include disodium
ethylenediamine tetraacetate (Na.sub.2H.sub.2EDTA), tetrasodium
ethylenediamine tetraacetate (Na.sub.4EDTA) and calcium disodium
ethylenediamine tetraacetate (CaNa.sub.2EDTA), wherein disodium
ethylenediamine tetraacetate is preferred. Preferably again,
preparation (A) contains the salt, preferably a sodium salt, of
ethylenediamine tetraacetic acid (EDTA) and at least one further
chelating agent.
[0050] 1-hydroxyethane-(1,1-diphosphonic acid) (HEDP) is also a
preferred chelating agent. Correspondingly, preparation (A)
preferably contains 1-hydroxyethane-(1,1-diphosphonic acid) and at
least one other chelating agent.
[0051] In a particularly preferred embodiment, preparation (A)
contains a salt, preferably a sodium salt, of ethylene diamine
tetraacetic acid (EDTA), and 1-hydroxyethane-(1,1-diphosphonic
acid) as chelating agents.
[0052] More preferably, the weight ratio of the salt, preferably
the sodium salt, of ethylene diamine tetraacetic acid (EDTA) to the
1-hydroxyethane-(1,1-diphosphonic acid) is from about 5:1 to about
1:5, more preferably from about 2:1 to about 1:2, and particularly
preferably about 1:1.
[0053] In a most particularly preferred embodiment, preparation (A)
contains, as the chelating agent, disodium ethylenediamine
tetraacetate and 1-hydroxyethane-(1,1-diphosphonic acid) in a
weight ratio of 1:1.
[0054] In a more particularly preferred embodiment, preparation
(A)--with respect to its weight--contains the at least two
chelating agents in a total quantity of from about 0.02 % to about
12 % by weight, more preferably from about 0.1 % to about 6 % by
weight, and more particularly preferably from about 0.2 % to about
3 % by weight.
[0055] It has surprisingly been shown that when using at least two
chelating agents, the lightening power is greater than when using
only one chelating agent. In addition, an improved stability on
storage of preparation (A), in particular by preventing or slowing
down the decomposition of the persulphate salt, has been
observed.
[0056] The preparations (B) and optionally (C) contain the
substances in a free-flowing cosmetic support. The base for the
free-flowing cosmetic support is thus preferably aqueous or
hydro-alcoholic. For the purposes of bleaching the hair, supports
of this type, for example, gels or, in addition,
surfactant-containing foaming solutions such as, for example,
shampoos, foaming aerosols or other preparations which are suitable
for application to the hair, are suitable. A preferred free-flowing
support as contemplated herein contains at least about 40 % by
weight, in particular at least about 50 % by weight of water. The
term "hydro alcoholic supports" as used in the context of the
present disclosure should be understood to mean water-containing
compositions containing from about 3 % to about 70 % by weight of a
C.sub.1-C4 alcohol, in particular ethanol or isopropanol. The
preparations (B) and optionally (C) may respectively additionally
contain other organic solvents such as, for example,
methoxybutanol, ethyldiglycol, 1,2-propylene glycol, n-propanol,
n-butanol, n-butyleneglycol, glycerine, diethyleneglycol
monoethylether, and diethyleneglycol mono-n-butylether. In this
regard, any water-soluble organic solvent is preferred. Preferably,
preparation (B) is a liquid.
[0057] Preparations (B) contain hydrogen peroxide as the oxidizing
agent.
[0058] The concentration of a hydrogen peroxide solution in
preparation (B) is determined on the one hand by legal requirements
and on the other hand by the desired effect.
[0059] Preferably, the preparations (B), with respect to their
total weight, contain hydrogen peroxide in quantities of from about
0.5 % to about 30 % by weight, preferably from about 1 % to about
20 % by weight, particularly preferably from about 5 % to about 15
% by weight and more particularly preferably from about 6 % to
about 12 % by weight, or explicitly about 6 %, about 7 %, about 8
%, about 9 %, about 10 %, about 11 % or about 12 % by weight.
[0060] Preferred ready-to-use agents contain, with respect to the
total weight of the ready-to-use agent, from about 0.01 % to about
12 % by weight, preferably from about 0.1 % to about 10 % by
weight, particularly preferably from about 3 % to about 9 % by
weight of hydrogen peroxide.
[0061] The ready-to-use agents for lightening keratinic fibres are
produced immediately prior to application to the hair by mixing the
two preparations (A) and (B) and optionally a third preparation (C)
and/or further preparations. The consistency of the ready-to-use
agents spans from free-flowing to spreadable.
[0062] The viscous properties of preparation (B) are of importance
as regards good miscibility and high stability. The preparations
(B) thus preferably have a viscosity of about 1000 mPas to about
50000 mPas, preferably from about 5000 mPas to about 45000 mPas and
particularly preferably from about 7000 mPas to about 40000 mPas,
the measurements being made with a rotational viscosimeter from
Brookfield, spindle size 4, at 25.degree. C. and 4 rpm. The
ready-mixed and ready-to-use agents preferably have a viscosity of
from about 10000mPas to about 100000 mPas and particularly
preferably from about 18000 mPas to about 80000 mPas, the
measurements being made with a rotational viscosimeter from
Brookfield, spindle size 5, at 25.degree. C. and 4 rpm.
[0063] The agents may contain further substances and auxiliary
substances. These shall be described below.
[0064] It may be advantageous for preparation (B) to contain at
least one non-ionic surfactant, preferably at least one ethoxylated
fatty alcohol containing from about 40 to about 60ethylene oxide
units. This should be understood to include an addition product of
ethylene oxide and a fatty alcohol. Fatty alcohols in this regard
are saturated and unsaturated alcohols containing 12 to 24 C atoms,
which may be linear or branched. The molar quantity of ethylene
oxide used per mole of fatty alcohol describes the degree of
ethoxylation. Particularly suitable non-ionic surfactants in this
regard are addition products of ethylene oxide with octyl alcohol
(capryl alcohol), nonyl alcohol (pelargonyl alcohol), undecyl
alcohol, undec-10-en-1-ol, dodecyl alcohol (lauryl alcohol),
2,6,8-trimethyl-4-nonanol (isolauryl alcohol), tridecyl alcohol,
tetradecyl alcohol (myristyl alcohol), pentadecyl alcohol,
hexadecyl alcohol (cetyl-/palmityl alcohol), heptadecyl alcohol,
octadecyl alcohol (stearyl alcohol), isostearyl alcohol,
(9Z)-octadec-9-en-1-ol (oleyl alcohol), (9E)-octadec-9-en-1-ol
(elaidyl alcohol), (9Z,12Z)-octadeca-9,12-dien-1-ol (linoleyl
alcohol), (9Z,12Z,15Z)-octadeca-9,12,15-trien-1-ol (linolenyl
alcohol), nonadecan-1-ol (nonadecyl alcohol), eicosan-1-ol (eicosyl
alcohol/arachyl alcohol), (9Z)-eicos-9-en-1-ol (gadoleyl alcohol),
(5Z,8Z,11Z,14Z)-eicosa-5,8,11,14-tetraen-1-ol (arachidonic
alcohol), heneicosyl alcohol, docosyl alcohol (behenyl alcohol),
(13Z)-docos-13-en-1-ol (erucyl alcohol) or (13E)-docosen-1-ol
(brassidyl alcohol). It is also possible to use mixtures of fatty
alcohols which are obtained by specific mixing or in fact by
extraction processes per se. Examples are cocosalcohol (mixture of
C.sub.8-C.sub.18 fatty alcohols) or cetearyl alcohol (1:1 mixture
of C.sub.16 and C.sub.18 fatty alcohols).
[0065] Degrees of ethoxylation of from about 20 to about 60 are
preferred. Preferred non-ionic surfactants of the fatty alcohol
type are ceteareth-20 and ceteareth-50.
[0066] Furthermore, setting the pH of the ready-mixed and
ready-to-use agent is of importance for the lightening power.
Values for the pH of between about 9 and about 12 are preferred for
the ready mixed and ready-to-use agents.
[0067] Furthermore, in this regard, the agents may contain
alkalizing agents. Examples of preferred alkalizing agents are
ammonia, alkanolamines, basic amino acids, as well as inorganic
alkalizing agents such as alkali or alkaline-earth metal
hydroxides, alkali or alkaline-earth metal metasilicates, alkali or
alkaline-earth metal silicates, alkali or alkaline-earth metal
phosphates and alkali or alkaline-earth metal hydrogen phosphates.
Preferred metal ions are lithium, sodium and/or potassium.
Preferred alkalizing agents are alkali or alkaline-earth metal
metasilicates and alkali or alkaline-earth metal silicates.
[0068] Suitable inorganic alkalizing agents are preferably selected
from sodium hydroxide, potassium hydroxide, calcium hydroxide,
barium hydroxide, sodium phosphate, potassium phosphate, sodium
silicate, potassium silicate, magnesium silicate, sodium carbonate
and potassium carbonate. Sodium hydroxide and/or potassium
hydroxide are particularly preferred.
[0069] Alkanolamine alkalizing agents are preferably selected from
primary, secondary or tertiary amines with a C.sub.2-C.sub.6 alkyl
backbone which carries at least one hydroxyl group. Particularly
preferred alkanolamines are selected from the group formed by
2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol,
4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol
(monoisopropanolamine), 1-aminobutan-2-ol, 1-aminopentan-2-ol,
1-aminopentan-3-ol, 1-aminopentan-4-ol, 2-amino-2-methyl-propanol,
2-amino-2-methylbutanol, 3-amino-2-methylpropan-1-ol,
1-amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol,
2-amino-2-methylpropan-1,3-diol, 2-amino- 2-ethyl-1,3-propanediol,
N,N-dimethylethanolamine, methylglucamine, triethanolamine,
diethanolamine and triisopropanolamine. Particularly preferred
alkanolamines are monoethanolamine, 2-amino-2-methyl-propanol and
triethanolamine.
[0070] Preferred amino acids for use as the alkalizing agent are
selected from the group formed by L-arginine, D-arginine,
D/L-arginine, L-lysine, D-lysine, D/L-lysine, L-ornithine,
D-ornithine, D/L-ornithine, L-histidine, D-histidine and/or
D/L-histidine. L-arginine, D-arginine and/or D/L-arginine are
particularly preferable for use as alkalizing agents.
[0071] Furthermore, it has been shown to be advantageous for the
preparation (B) to contain at least one stabilizer or chelating
agent.
[0072] Particularly preferred stabilizers are phenacetin, alkali
benzoate (sodium benzoate) and salicylic acid.
[0073] Suitable chelating agents which may be contained in the
preparation (B) comprise: [0074] a) polycarboxylic acids, in which
the sum of the carboxyl and optional hydroxyl groups is at least 5,
such as gluconic acid; [0075] b) nitrogen-containing mono- or
polycarboxylic acids such as ethylenediamine tetraacetic acid
(EDTA), N-hydroxyethylethylene diaminotriacetic acid, diethylene
triaminopentaacetic acid (DTPA), ethylenediamine disuccinic acid
(EDDS), hydroxyethylimino diacetic acid, nitridodiacetic
acid-3-propionic acid, isoserine diacetic acid,
N,N-di-(2-hydroxyethyl)glycine,
N-(1,2-dicarboxy-2-hydroxyethyl)glycine,
N-(1,2-dicarboxy-2-hydroxyethyl)aspartic acid or nitrilotriacetic
acid (NTA), ethylenediamine diglutaric acid (EDGA),
2-hydroxypropylenediamine disuccinic acid (HPDS),
glycinamide-N,N'-disuccinic acid (GADS),
ethylenediamine-N-N'-diglutaric acid (EDDG),
2-hydroxypropylenediamine-N-N'-disuccinic acid (HPDDS),
diaminoalkyldi-(sulphosuccinic acid) (DDS), ethylenedicysteic acid
(EDC), ethylenediamine-NN'-bis(orthohydroxyphenyl)acetic acid
(EDDHA), N-2-hydroxyethylamino-N,N-diacetic acid,
glyceryliminodiacetic acid, iminodiacetic
acid-N-2-hydroxypropylsulphonic acid, aspartic
acid-N-carboxymethyl-N-2,5-hydroxypropyl-3-sulphonic acid,
.alpha.-alanin-N,N'-diacetic acid, aspartic acid-N,N'-diacetic
acid, aspartic acid-N-monoacetic acid, dipicolinic acid, as well as
their salts and/or derivatives; [0076] c) geminal diphosphonic
acids such as 1-hydroxyethane-1,1-diphosphonic acid (HEDP), its
higher homologues containing up to 8 carbon atoms, as well as
derivatives containing hydroxyl or amino groups and
1-aminoethane-1,1 -diphosphonic acid, its higher homologues
containing up to 8 carbon atoms as well as derivatives containing
hydroxyl or amino group; [0077] d) aminophosphonic acids such as
ethylenediamine tetra(methylenephosphonic acid) (EDTMP),
di-ethylene-triaminopenta(methylenephosphonic acid) (DTPMP) as well
as its higher homologues, or nitrilo(methylenephosphonic acid);
[0078] e) phosphonopolycarboxylic acids such as
2-phosphonobutane-1,2,4-tricarbonic acid, and/or [0079] f)
cyclodextrin.
[0080] The preparations (A) and (B) may be mixed with other
separately packaged preparations immediately before application, to
form a mixture for application.
[0081] In a preferred embodiment, the agent additionally contains
at least one further preparation (C) which is packaged separately
from the preparations (A) and (B), wherein preparation (C) contains
at least one alkalizing agent.
[0082] Irrespective of whether preparation (C) and/or preparation
(B) and/or other preparations contain alkalizing agents, when
alkalizing agents are employed, those agents are preferred which
contain alkalizing agents in a quantity of from about 0.05 % to
about 20 % by weight, in particular fromn about 0.5 % to about 10 %
by weight, respectively with respect to the total weight of the
entire ready-to-use agent.
[0083] To further increase the lightening power, to reinforce the
bleaching, preparation (C) may additionally be supplemented with a
silicon-containing compound. This is preferably selected from the
group formed by silica, alkali metal silicates and alkaline-earth
metal silicates.
[0084] Particularly preferably, the lightening or bleaching agent
contains specific direct dyes in the complementary colors in order
to tone down unwanted residual color nuances, in particular in the
red or blue regions. These are dyes which act directly on the hair
and do not require any oxidative processes in order to form the
color. Direct dyes are usually nitrophenylenediamines,
nitroaminophenols, azo dyes, anthraquinones or indophenols. Direct
dyes are known as anionic, cationic and non-ionic direct dyes. The
direct dyes are each preferably used in a quantity of from about
0.001 % to about 2 % by weight, with respect to the entire
preparation for application.
[0085] Furthermore, the agents may contain other substances,
auxiliary substances and additives such as, for example, non-ionic
polymers, cationic polymers, anionic polymers, zwitterionic and
amphoteric polymers, structuring agents, thickening agents, hair
conditioning compounds, fiber structure-improving substances, other
surfactants, colorants for coloring the agent, anti-dandruff
substances, amino acids, oligopeptides, protein hydrolysates on an
animal and/or plant bases, light stabilizers, UV blockers,
vitamins, provitamins, vitamin precursors, plant extracts, fats,
waxes, swelling and penetration substances, opacifiers, pearlescent
agents, thickeners and pigments.
[0086] In a second aspect, the present disclosure provides a method
for modifying the color of keratinic fibres, wherein at least two
separately packaged preparations (A) and (B), of which preparation
(A) contains at least one persulphate, and at least two chelating
agents and preparation (B) contains at least one oxidizing agent,
are mixed to form a mixture for application, which is applied to
the fibres and is rinsed out again after a treatment time.
[0087] The ready-to-use agents are produced immediately prior to
application to the hair by mixing the two preparations (A) and (B)
and optionally a third preparation (C) and/or further preparations.
In ready-to-use agents which are mixed from more than two
preparations to form a prepared mixture for application, it may be
immaterial whether initially two preparations are mixed together
and then the third preparation is added and mixed in, or whether
all of the preparations are placed together at the same time and
then mixed. Mixing may be carried out by stirring in a bowl or dish
or by shaking in a closable container.
[0088] The term "immediately" in this regard should be understood
to mean a time period of a few seconds to about one hour,
preferably to about 30 min, in particular to about 15 min.
[0089] The agents are applied in a method for lightening keratinic
fibres, in particular human hair, in which the agent is applied to
the keratinic fibres, left on the fibres for a treatment time of
from about 10 to about 60 minutes and then rinsed out again with
water or washed out with a shampoo.
[0090] Preferably, the treatment time for the ready-to-use
lightening agent is from about 10to about 60 min, in particular
from about 15 to about 50 min, particularly preferably from about
20 to about 45 min. During the treatment time for the agent on the
fibres, it may be advantageous to assist the lightening process by
adding a little heat. The heat may be added by employing an
external heat source, such as with the aid of a flow of warm air,
and also, in particular when lightening the hair of living
subjects, by employing the body temperature of the subject. In the
latter case, the part to be lightened is usually covered with a
hood. A work phase at ambient temperature is preferred.
[0091] After the end of the treatment time, the remaining
lightening preparation is rinsed out of the hair with water or a
cleansing agent. In particular, the cleansing agent may be a
commercial shampoo, but in particular, a cleansing agent can be
dispensed with and the rinsing procedure can be carried out with
mains water if the lightening agent contains a support with a high
surfactant content.
[0092] The preferred embodiments of the agent described above apply
to the method mutatis mutandis.
[0093] In a further aspect, the present disclosure provides the use
of at least two chelating agents in a preparation (A), which is a
component for an agent for lightening keratinic fibres, containing
at least two separately packaged preparations (A) and (B) as well
as, optionally, a preparation (C) which is packaged separately from
(A) and (B) which are mixed immediately prior to application in
order to form a mixture for application, wherein [0094] i.
preparation (A) contains at least one persulphate, and [0095] ii.
preparation (B) is free-flowing and contains at least one oxidizing
agent, in order to increase the lightening power when lightening
keratinic fibres.
[0096] The preferred embodiments of the agent described above also
apply to the use mutatis mutandis.
[0097] In a further aspect, the present disclosure provides a
method for increasing the lightening power when lightening
keratinic fibres, in which at least two chelating agents of a
preparation (A), which is a component of an agent for lightening
keratinic fibres, containing at least two separately packaged
preparations (A) and (B) as well as, optionally, a further
preparation (C) which is packaged separately from (A) and (B),
which are mixed immediately prior to use in order to form a mixture
for application, wherein [0098] i. preparation (A) contains at
least one persulphate, and [0099] ii. preparation (B) is
free-flowing and contains at least one oxidizing agent.
[0100] The following examples provide more details of the present
disclosure without in any way limiting its scope.
EXAMPLES
TABLE-US-00001 [0101] TABLE 1 Composition of preparation (A) for
bleaching agent formed using two preparations (as a % by weight)
Ingredient A Na.sub.2H.sub.2EDTA 0-6 HEDP 0-3 Sodium
hexametaphosphate 0.3 Sodium metasilicate 18 Aerosil 200 2 Rohagit
S hv 2 Cekol 50000 2.5 Ammonium persulphate + 0.5% silica 10.0
Potassium persulphate 32 Paraffinum Liquidum 6 Fragrance 0.2
Calcium stearate 0.5 Starch 2 Colorant 0.5 Magnesium carbonate and
water qs 100 *Starting materials used: Aerosil 200 (INCI name:
Silica (Evonik Degussa)), Rohagit S hv (INCI name: Acrylates
Copolymer (Evonik Rohm)), Cekol 50000 (INCI name: Cellulose Gum (CP
Kelco))
[0102] A variety of preparations (A) were prepared using different
quantities of chelating agents Na.sub.2H.sub.2EDTA and HEDP.
TABLE-US-00002 TABLE 2 Quantity of chelating agents in the
respective preparations (A) for bleaching agent formed using two
preparations (as a % by weight) Preparation Na.sub.2H.sub.2EDTA
HEDP (A)-V0 -- -- (A)-V1 1 -- (A)-E1 0.5 0.5 (A)-V2 2 -- (A)-E2 1 1
(A)-V3 3 -- (A)-E3 1.5 1.5 (A)-V4 6 -- (A)-E4 3 3
TABLE-US-00003 TABLE 3 Composition of preparation (B) for bleaching
agent formed from two preparations (as a % by weight) Ingredient B
Potassium hydroxide solution (50%) 0.2 Dipicolinic acid 0.1
Disodium pyrophosphate 0.1 HEDP 60% 0.25 Hydrogen peroxide (50%)
12.2 Paraffin 2 Cetearyl Alcohol 4 Water, demineralized qs 100
[0103] To produce a bleaching agent, in each case one of the
preparations (A)-VO to (A)-E4 (see Table 2) was mixed with the
preparation (B) in a ratio of 1:2.
[0104] Different strands of hair (Kerling natural European hair
3-0, 10 cm in length) were treated for 45 minutes with a bleaching
agent based on preparations (A)-V0 to (A)-E4 and dried. In each
case, 3 strands of hair were produced and measured colorimetrically
(Datacolor Spectraflash SF 450). The bleaching procedure was
sometimes carried out up to three times.
TABLE-US-00004 TABLE 4 CIE Lab values: Degree of
bleaching/Preparation (A) CIE L CIE a CIE b unbleached/-- 18.7 3.9
4.1 1 x bleached/(A)-V0 45.5 12.8 30.1 1 x bleached/(A)-V1 48.8
12.9 31.7 1 x bleached/(A)-E1 52.8 12.2 31.9 1 x bleached/(A)-V2
49.0 12.8 31.9 1 x bleached/(A)-E2 54.0 12.1 33.0 1 x
bleached/(A)-V3 51.6 12.6 32.7 1 x bleached/(A)-E3 54.4 12.4 33.3 1
x bleached/(A)-V4 51.1 12.6 32.4 1 x bleached/(A)-E4 60.4 10.8 33.9
2 x bleached/(A)-V0 60.9 10.0 31.9 2 x bleached/(A)-V1 61.6 10.0
32.2 2 x bleached/(A)-E1 67.1 8.3 30.2 2 x bleached/(A)-V2 63.0 9.2
31.3 2 x bleached/(A)-E2 65.6 8.6 30.9 2 x bleached/(A)-V3 64.8 8.6
30.8 2 x bleached/(A)-E3 69.5 7.5 29.9 2 x bleached/(A)-V4 66.9 8.1
30.2 2 x bleached/(A)-E4 71.8 5.7 28.4 3 x bleached/(A)-V0 71.8 5.6
26.2 3 x bleached/(A)-V1 73.2 5.0 25.5 3 x bleached/(A)-E1 74.2 3.9
24.0 3 x bleached/(A)-V2 75.9 4.1 24.4 3 x bleached/(A)-E2 74.9 3.8
23.0 3 x bleached/(A)-V3 74.2 3.5 23.2 3 x bleached/(A)-E3 76.6 3.4
22.6 3 x bleached/(A)-V4 75.1 3.3 22.3 3 x bleached/(A)-E4 77.1 1.9
19.6
[0105] The results clearly show that the bleaching agents as
contemplated herein with two chelating agents in preparation (A)
exhibit a stronger lightening power than bleaching agents with one
chelating agent in preparation (A).
[0106] While at least one exemplary embodiment has been presented
in the foregoing detailed description, it should be appreciated
that a vast number of variations exist. It should also be
appreciated that the exemplary embodiment or exemplary embodiments
are only examples, and are not intended to limit the scope,
applicability, or configuration of the various embodiments in any
way. Rather, the foregoing detailed description will provide those
skilled in the art with a convenient road map for implementing an
exemplary embodiment as contemplated herein. It being understood
that various changes may be made in the function and arrangement of
elements described in an exemplary embodiment without departing
from the scope of the various embodiments as set forth the the
appended claims.
* * * * *